Wideband dielectric antenna
AssigneeAGC Automotive Americas R&D, Inc.
InventorsQian Li, Wladimiro Villarroel
Life of this patent
Estimating the term…
Abstract
An antenna for radiating an electromagnetic field having both linear and circular polarization includes a ground plane and a dielectric layer. The dielectric layer is disposed on the ground plane and has at least one exposed surface that radiates the electromagnetic field. A first feeding element is disposed on the exposed surface for electrically exciting the dielectric layer to provide the linear polarization at a first frequency having a first effective wavelength. A second feeding element is disposed on the exposed surface for electrically exciting the dielectric layer to provide the circular polarization at a second frequency having a second effective wavelength. The feeding elements are separated by a distance greater than ⅛ wavelength of the largest of the effective wavelengths.
Claims20
An antenna for radiating an electromagnetic field having both linear and circular polarization, said antenna comprising:
- a ground plane;
- a dielectric layer disposed on said ground plane and having at least one exposed surface that radiates the electromagnetic field;
- and
- a first feeding element disposed on said at least one exposed surface for electrically exciting said dielectric layer to provide the linear polarization at a first frequency having a first effective wavelength;
- and
- a second feeding element disposed on said at least one exposed surface for electrically exciting said dielectric layer to provide the circular polarization at a second frequency having a second effective wavelength;
- wherein
- said feeding elements are separated by a distance greater than ⅛ wavelength of any of the effective wavelengths.
A window having an integrated antenna for radiating an electromagnetic field having both linear and circular polarization, said window comprising:
- a nonconductive pane;
- a ground plane spaced from said nonconductive pane;
- a dielectric layer sandwiched between said ground plane and said nonconductive pane and having at least one exposed surface that radiates the electromagnetic field;
- a first feeding element disposed on said exposed surface for electrically exciting said dielectric layer to provide the linear polarization at a first frequency having a first effective wavelength;
- and
- a second feeding element disposed on said exposed surface for electrically exciting said dielectric layer to provide the circular polarization at a second frequency having a second effective wavelength;
- wherein
- said feeding elements are separated by a distance greater than ⅛ wavelength of any of the effective wavelengths.
Dependencies are inferred from the claim text.